It has set us back in so many respects that I'm not sure how long it will take for us to catch up.

我们在很多方面都被延误了，不知道需要多久才能赶上。

《柯林斯英汉双解大词典》

Everyone understood how hard it was to get back into the swing of things after such a long absence.

每个人都明白离开这么长一段时间后要重新全力投入有多难。

《柯林斯英汉双解大词典》

Millie smiled back! She didn't know how to start jumping with a long rope.

米莉笑着回应！她不知道如何开始用一根长绳子跳。

youdao

Democrat Carolyn Maloney asked him about economist's predictions that it would take the country to full employment: "Assuming that jobs are created at 2.8 million jobs per year, the best job creation of any administration, and this was achieved by former President Clinton, how long would you expect it to take us to get back to full employment?" "Well,without offering an opinion on that 10.7 million jobs, at that rate though, it would be about three years."

VOA: standard.2009.12.05

As time increases, the angle increases and we can ask, "How long does it take for the particle to come back to the starting point?"

这个角度随着时间在增加,我们会问,"质点需要多长时间,才能转到起点"

耶鲁公开课 - 基础物理课程节选

When you buy something, how often do you really step back and ask how long it should last?

FORBES: Why The New Macbook Pro's Repair Problems Matter

It's almost - interestingly enough, it's actually - there's a little bit more optimism on the trail than there was a few months ago in July and August when he really bottomed out and looked like - you know, a lot of people are wondering back here in Arizona how long he was keeping to stay in the race.

NPR: McCain Keeps Home Fires Burning

The next dialogue tests the speed of your connection and then you are told how long the back-up will take to complete.

BBC: Weebly website